presentation title goes here snai emerald 3.0 storage taxonomy patrick stanko snia emerald tm snia...

PRESENTATION TITLE GOES HERE

SNAI Emerald 3.0 Storage Taxonomy

Patrick Stanko

SNIA EmeraldTM

SNIA Emerald Power EfficiencyMeasurement Specification,

for use in EPA ENERGY STAR®

November 18

SNIA EmeraldTM and ENERGY STAR Stakeholder Meeting November 2105 www.sniaemerald.com 2

Taxonomy Outline

History

Drivers for new Taxonomy

SNIA Data collection

New Storage Taxonomy for Emerald 3.0


Why have a storage taxonomy for EmeraldTM

Need a fair comparison among similar products

Able to compare power performance trade offs

Compare a car and truck

Similar green metrics may apply to all product categories/classifications but different values establish best-in-class

Best commuter car and best sports car MPG

Unique considerations apply to special categories

Truck towing capacity vs MPG

A clear taxonomy will simplify comparisons / trade offs

Help customers predict power usage in their IT environment


Criteria for EmeraldTM Specification 2.1.1storage taxonomy categories

Based on power performance trade offsAccess time to data vs power

Tape (Removable Media Library) has great power utilization but long access times

Access pattern of the dataCan the storage system randomly place/retrieve a block of data

Can the storage system only handle sequential blocks of data

User accessible dataIn the storage network there are many systems

– Store data

– Transfer data between host and storage

– Support the storage system or manipulate data

Is user data stored on the system


EmeraldTM data center storage taxonomy categories

Data Center Storage Taxonomy CategoriesOnline

Near Online

Removable Media Library

Virtual Media Library

Adjunct Product

Interconnect Element

The EmeraldTM power measurement specification 2.1.1 only defines test for four of the categories


Break down categories into classification

Added features of storage system that would consume more power are used to break down the categories

Component or consumer product (How big the systems is)

How is it connected to the host (Direct vs Network)

Where is the storage controller (Client the controller vs dedicated controller)

Reliability Availability Serviceability Storage protection

No Single point of failure

Non disruptive serviceability

Size of system

Other features of the storage system


Online Classification Breakdown

Start small with online 1 and work up to large storage system with online 6

Online 1 system small consumer productsDid not define a power efficiency test for this classification in the specification

Online 2 system small storage system Generally JBOD

For Energy Star needs to have a controller

Online 3 system Integrated control and needs to have some storage protection

Online 4 systemLarger storage systems that require no SPOF

Online 5 systemVery large high end systems that require non-disruptive serviceability

Online 6 systemVery large mainframe systems


Taxonomy Outline

History






File storage systems

Object storage systems

Solid State Storage

Storage cache at the client

Energy Star 1.0 data analysis


Taxonomy Outline

History





Green TWG Survey

Base new taxonomy on data

Green TWG developed a servStarted with historical taxonomy questions

Based on data analysis

Added questions to capture new technologies

Asked members of the TWG to fill out


Questionnaire

Show questionnaire


Taxonomy Outline

History





Taxonomy 3.0

Need to get surveys back

The hard partHistorically a contentious topic

Need to make as simple as possibleMany variables for performance

Many variables for power

Many variables for both

Consistency across the industry Not everyone calls the same thing by the same name

Do we need to include everyone? Do we need a compete storage taxonomy or concentrate on data center


Emerald storage taxonomy

Taxonomy The technique of classification

A classification into ordered categories

Storage TaxonomyMany ways to classify storage into categories

Type of media used to store data

IDC price bands

Required power

Performance

Ext.


Storage classifications

For consistency broke up each category into six classifications

Started with the small systems (classification 1) and worked up to the larger systems (classification 6)

The EmeraldTM power measurement specification may not define some of the classifications or have tests for them

I.e. did not define an class 4 classification for near-online, removable media libraries, or virtual media library

Tried to keep the size of the system (classification) consistence across the categories


Classification of Online Systems

Online ClassificationOnline 1

Online 2

Online 3

Online 4

Online 5

Online 6

Attribute

Classification

Online 1 Online 2 Online 3 Online 4 Online 5 Online 6

Access PatternRandom/Sequential

Random/Sequential

Random/Sequential

Random/Sequential

Random/Sequential

Random/Sequential

MaxTTFD (t) t < 80 ms t < 80 ms t < 80 ms t < 80 ms t < 80 ms t < 80 ms

User-Accessible Data

Required Required Required Required Required Required

Connectivity Not specifiedConnected to single or multiple hosts

Network-connected

Network-connected

Network-connected

Network-connected

Consumer/Component

Yes No No No No No

Integrated Storage Controller

Optional Optional Required Required Required Required

Storage Protection

Optional Optional Required Required Required Required

No SPOF Optional Optional Optional Required Required Required

Non-Disruptive Serviceability

Optional Optional Optional Optional Required Required

FBA/CKD Support

Optional Optional Optional Optional Optional Required

Maximum Supported Configuration

≥1 ≥ 4 ≥ 12 > 100 >400 >400


Near Online Classifications

Attribute

Classification

Near Online 1

Near Online 2

Near Online 3

Near Online 4

Near Online 5

Near Online 6

Access Pattern Random/Sequential

Random/Sequential

Random/Sequential

Random/Sequential

Random/Sequential

MaxTTFD (t) t > 80 ms t > 80 ms t > 80 ms t > 80 ms t > 80 msUser-accessible Data

Required Required Required Required Required

Connectivity Not specified

Network connected

Network connected

Network connected

Network connected

Consumer/Component

Yes No No No No

Integrated Storage Controller

Optional Optional Required Required Required

Storage Protection


No SPOF Optional Optional Optional Optional RequiredNon-Disruptive Serviceability

Optional Optional Optional Optional Required

FBA/CKD Support

Optional Optional Optional Optional Optional


≥ 1 ≥ 4 ≥ 12 > 100 > 1000


Removable Media Library Classifications

Attribute Classification

Removable 1 Removable 2 Removable 3 Removable 4 Removable 5 Removable 6

Access Pattern

Sequential Sequential Sequential Sequential Sequential

MaxTTFD (t) 80ms < t < 5m 80ms < t < 5m 80ms < t < 5m 80ms < t < 5m 80ms < t < 5m

User-Accessible Data


Robotics Prohibited Required Required Required Required

No SPOF Optional Optional Optional Optional Required

Non-disruptive Serviceability


Maximum Supported Drive Count

Not specified 4 ≥ 5 ≥ 25 ≥ 25


Virtual Media Library Classifications

Attribute

Classification

Virtual 1 Virtual 2 Virtual 3 Virtual 4 Virtual 5 Virtual 6

Access Pattern Sequential Sequential Sequential Sequential Sequential

MaxTTFD (t) t < 80 ms t < 80 ms t < 80 ms t < 80 ms t < 80 ms

User-accessible Data


Storage Protection


No SPOF Optional Optional Optional Optional Required

Non-Disruptive Serviceability



12 >12 > 48 > 96 > 96

presentation title goes here snai emerald 3.0 storage taxonomy patrick stanko snia emerald tm snia...

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